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Organoclays with Carbosilane Dendrimers Containing Ammonium or Phosphonium Groups.

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    0485285 - ÚCHP 2019 RIV GB eng J - Článek v odborném periodiku
    Müllerová, Monika - Šabata, Stanislav - Matoušek, J. - Kormunda, M. - Holubová, J. - Bálková, R. - Petričkovič, Roman - Koštejn, M. - Kupčík, Jaroslav - Fajgar, Radek - Strašák, Tomáš
    Organoclays with Carbosilane Dendrimers Containing Ammonium or Phosphonium Groups.
    New Journal of Chemistry. Roč. 42, č. 2 (2018), s. 1187-1196. ISSN 1144-0546
    Institucionální podpora: RVO:67985858
    Klíčová slova: organic-inorganic nanocomposites * layered silicates * thermal-stability
    Kód oboru RIV: JI - Kompozitní materiály
    Obor OECD: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
    Impakt faktor: 3.069, rok: 2018

    New composite materials could reveal attractive capabilities and favourable properties. Herein, we present novel layered nanocomposites consisting of inorganic clay (montmorillonite) and cationic carbosilane dendrimers. A comparative study was performed to evaluate cationic moieties (ammonium or phosphonium) and various generations of dendrimers (first, second and third) and their influence on the characteristics of resulting materials. The target nanocomposites were characterized by XRD, TEM, TGA, IR and MAS NMR. Interestingly, with multivalent dendritic cations, as opposed to monovalent cations, we detected a new connection of cationic species to the inorganic matrix by both ammonium and phosphonium dendrimers. To evaluate the mechanism of thermal degradation of the prepared materials, non-oxidative pyrolysis coupled with analysis of the resulting products by IR and MS was performed. To illustrate the catalytic activity of the as-prepared materials, selected samples were tested as catalysts in the cycloaddition of CO2 with epoxide (allyl glycidyl ether).
    Trvalý link: http://hdl.handle.net/11104/0280838
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